Ten key adding machine



March 13, 1955 T. E. D. BILDE TEN KEY ADDING MACHINE 9 Sheets-Sheet l Filed Nov. 28, 1952 INVENTOR ATTORNEYS T. E. D. BILDE 2,738,128

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TEN KEY ADDING MACHINE Filed NOV. 28, 1952 9 Sheets-Sheet 5 INVENTOR ATTORNEYS March 13, 1956 T. E. D. BILDE 2,738,128

TEN KEY ADDING MACHINE Filed Nov. 28, 1952 9 Sheets-Sheet 4 INVENTOR ATTORNEYS March 13, 1956 T, E, D, BlLDE 2,738,128

TEN KEY ADDING MACHINE Filed Nov. 28, 1952 9 Sheets-Sheet 5 1N VENTOR MMMM ATTORNEYS March 13, 1956 T. E. D. BILDE 2,738,128

TEN KEY ADDING MACHINE Filed Nov. 28, 1952 9 Sheets-Sheet 6 1l ll i ,4 INVENTOR f4 ,3 T" ma M ,9M KM@ I2 /Z l/ L /G BYMl/w/ f ATTORNEYS March 13, 1956 T, E, D BILDE 2,738,128

TEN KEY ADDING MACHINE Filed Nov. 28, 1952 9 Sheets-Sheet '7 a Q @d March 13, T' E. D. BlLDE TEN KEY ADDING MACHINE Filed Nov. 28, 1952 9 Sheets-Sheet 8 van @w m@ m ,Mmmm n l ATTORNERS March 13, 1956 Filed NOV. 28, 1952 T. E. D. BILDE TEN KEY ADDING MACHINE 9 Sheets-Sheet 9 g ml . n JJ j 25'6 254 264 2'56552 224 258256250 242 232 240 INVENTOR ATTORNEY United States Patent O TEN KEY ADDING MACHINE Tord Erik Daniel Bilde, Stockholm, Sweden, assignr to Richard Nilsson AB., Stockholm, Sweden, a corporation of Sweden Application November 28, 1952, Serial No. 322,941

Claims. (Cl. 23S-60) This invention relates to a computing machine of the reduced key board type specially adapted for addition and subtraction purposes and adapted to be placed on a table or the like for computing work.

The invention more particularly refers to computing machines of the type above described in which a number of stop members arranged in a number of transverse rows corresponding to the number of units in the numeral system considered and with a number of stop members in each transverse row corresponding at least to the number of decades in the machine are operable by setting keys for displacement from an idle position to an operative position and in either position are at each operation displaced in the transverse direction a distance corresponding to the distance between two adjacent decades in the row, and in which a number of actuator members are displaced longitudinally to be stopped in a position determined by a stop member in operating position, said displacement corresponding in each decade to the :ligure to be entered into the totalizer.

Throughout the following description I have used the terms longitudinaL transverse, right, left, "fore ward, rearwardj front and back as the movements, positions or parts considered appear seen from the standpoint of the operator, which, as usual for computing machines of the type described, has the machine placed before him on a horizontal support, f. ex. a table, with the keyboard nearest and the direction or" the length of the machine directed away from him.

In a machine of the type described the actuator members are capable of transmitting their displacement to a totalizer and to a printing device for entering the amount set on the keys into the totalizer and respectively for printing the amount entered on a paper strip or other printing sheet fed on a printing platen, the cooperation of the actuator members, the totalizer and the printing device being also reversible for extracting a sum from the totalizer and printing it on the printing sheet.

The purpose of the invention is to obtain a computing machine, in which all the complicated mechanisms of known computing machines are replaced by very simple mechanisms having a reduced number of parts.

Another purpose of the invention is to obtain a computing machine which is considerably reduced in size.

A further purpose of the invention is to reduce considerably the mass of the parts to be moved at each computing operation so as to reduce the necessary force for driving the machine and also to reduce the resistance of the different parts to motion so as to further reduce the necessary driving force.

Consequently it forms another purpose of the invention to obtain a computing machine which can be driven with a very reduced etort and in which the ordinary drivinghandle with a long crank lever or the ordinary heavy electric motor and the necessary mechanism for connecting and disconnecting of the main driving shaft from the motor at each revolution of said shaft can be replaced by a single driving key adapted for relatively i2,738,128 Patented Mar. 13, 1956 reduced motion and thereby causing only a reduced interruption of the handwerk at the machine.

With these and other purposes and advantages in view I have constructed a computing machine of the type above described, which contains a number of different mechanisms, i. e. a setting mechanism, a driving mechanism, an actuator mechanism for the totalizer, which in itself forms no part of this invention, a control mechanism and a printing mechanism. Each of these mechanisms will be described in the following in its special chapter with reference to the accompanying drawings, which show an e'mbodiment of my machine, and in which Fig. 1 is a side elevation of the machine with the casing in section to show the diierent mechanisms. Fig. 2 is a front eleva"- tion of the driving mechanism. Fig. 3 is a transverse section at an enlarged scale through the setting mechanism approximately along line III-III in Fig. 5. Fig. 4 is 'a front elevation of the setting mechanism at an enlarged scale. Fig. 5 is a longitudinal section through the setting mechanism at an enlarged scale approximately along line V-V in Fig. 3. Fig. 6 is a rear elevation of the setting mechanism. Figs. 7 and 8 show a detail of the setting mechanism in two dilerent positions. Fig. 9 is a section in part along line IX--IX in Fig. 10 and Fig. 10 is a section in part through the setting mechanism approximately along line X-X in Fig. 9. Fig. ll is a front view of a portion of a frame forming part of the setting mechanism. Fig. i2 is a rear elevation and Fig. i3 a side elevation of one of the stop members. Fig. 14 is a side elevation of the control mechanism and'Fig. l5 a section thereof approximately along line XV'-XV in Fig. 16. Fig. 16 is a iront elevation of the control mechanism and Fig. 17 a plane View thereof wherein the totalizer and the actuator members have been left out to show guide grooves thereunder. Fig. 18 shows the key-board.

As illustrated in Fig. l, the computing machine cornprises a casing having a base plate 1 supported by feet 2 of rubber or other elastic and adhering material xed to the underside of the base plate 1. The casing further comprises an upper cover portion 3 preferably of plastic or other resisting but light material joined border to border to the bent up border edges of the base plate and having recesses and openings adapted to the inner mechanisms of the machine and permitting the parts to be operated or observed from the outside to extend through said openings to the outside of the casing. Nearly all the parts extending'to 'the outside and all the other parts of the mechanisms inside the casing are connected with the base plate 1 so as to permit the opening of the casing by lifting off the upper cover 3 after loosening connecting screws (not illustrated) by which the cover 3 is fastened on the base plate 1 and render the inner mechanisms of the machine accessible for repair or adjustment. Further details about the openings in the cover 3 will become evident from the following description of the different mechanisms of the mechanism enclosed within the casing.

Setting mechanism The setting mechanism comprises a block of frames 4, 9, 88 and 89 attached together to form a rectangular body by means of screws bolts passing through holes in the corners of each frame. The block of frames rests on the base plate 1 and is attached to it by any suitable means, such as screws (not illustrated) inserted from the underside of the base plate through this into one or more of the frames. The inner openings 6 of the frames have the form illustrated in Fig. 3 with two rectilinear parallel sides and semicircular ends. The edge of the opening in each of frames designated by 4 has a groove 7 extending through a portion of the thickness of the frame and forming a guide for stop members 8, more clearly illuS- trated in Figs. 12 and 13.

These stop members have their outer end 10 turned away from opening 6, arched according to the radius of the outer edge of the groove 7 at the semi-circular outer ends of the opening 6, two sides 11 parallel with each other in their main outer part and converging towards each other at the inner end of the stop member. The inner end surface 12 of the stop member turned towards the opening 6is straight and its distance from the outer end 10 is approximately the same as the radial depth of the groove 7. The thickness of the stop member is approximately the same as the depth of the groove 7 meas ured in a direction transverse to the main plane of the frame 4. At the rear face 13 of the stop members there are two grooves 14 and 15 arched concentrically with the outer end 10. The arched sides of the inner groove 14 are parallel while the outer groove l has an outer side at right angles to the rear face 13 and an inner side, turned towards the inner groove 14 inclined towards the latter, as clearly illustrated in Fig. 13. OnV the front face 17 of the stop member 8 there is a cylindrical knob 18.

In the groove 7 of each frame 4 there are guiding lists for the stop members, which guiding lists, as illustrated in Fig. 1l, consist of a fixed guiding list 20 extending from the left end of the lower straight portion of the groove 7 along said straight portion and through the right arched end of the groove to the right end portion of the upper straight part of the groove 7. This guiding list runs parallel with the edge of the opening 6 of frame 4 at a distance of the outer edge 22 of the groove 7 equal to the distancebetween the outer end of the stop member and the inner groove 14 therein. Another xed guidnglist Z4 extends through the upper half of the left arched end portion of the groove 7. A resilient guiding list 26, extending from the left end of the upper straight portion of the groove 7 along said groove to a distance of the nearby -end of the fixed guiding list equal to a little morethan one and a half times the width of the stop members between their side surfaces 11, consists of the bent edge 26 of a steel strip 27, extending a distance past the ends of the guiding list 26 and xed to the frame by screws 28. The depth of the groove 7 in the transverse direction of the frame, i. e. in the longitudinal direction of the machine, is somewhat larger behind the resilient guiding list 26 so as to permit it to be pushed back from its engagement with one of the grooves in the stop members. The straight portions of the guiding lists 20 and 26 have a width, which is so much less than the width of the arched grooves 14 and 15 of the stop members, that the stop members can be guided to slide easily along the groove 7 in any position.

They rear face of the frames 4 situated in front of such frames, that have grooves 7 and stop members guided therein, are provided with another groove 73, as indicated in dotted lines in Fig. ll and as shown in Fig. 5. This groove 73 is to make place and serve as guiding for the lnobs 18 projecting from the front faces of the stop memers 8.

In the example illustrated the machine is designed for nine decades. In this casek the resilient guiding list 26 must extend over a length such that nine stop members 8 can be situated side by side on said guiding list.

Through the centers of the Vright arched end portions of the openings 6 of all the frames 4 in the block of frames extends a longitudinal shaft 30, on which are Xedly mounted a number of cog-wheels 32, each of them engaging the knobs 18 on the stop members 8 situated in the arched end portion of the groove 73 surrounding the cog-wheel 32.

Each frame 4 in the block of frames has recesses on its lower edges which recesses together form channels extending Vthrough the block of frames in the longitudinal direction of the machine, i. e. one narrow channel 34 for a rack 35 to be described and one broad channel 36 for an operating slide 38 also to be described, the rack 35 and the slide 38 being guided within said channels be- 4 tween the frames and the base plate 1. The frames 4 are further provided with recesses at their upper edges so as to form an upper space 39 in the upper part of the block of frames.

The block of frames is at its front face and rear face covered with plates 40 and 41 respectively having rectangular openings corresponding with the openings 6 of the frames and recesses corresponding to the recesses 34 for the racks 35 and 36 for the slide 38 but closing the front and rear end of the upper space 39.

The top of the block of frames is covered by a plate 43 forming the key-board of the machine. In this keyboard 43 are lixed tubular vertical guides 45 for the stems 46 of keys 47 and 48 of which ten numeral keys 47 marked from 0 to 9 are arranged in the manner usual for machinesrof the reduced key-board type, i. e. with the numeral keys l to 9 in three rows of three keys each and a larger 0-key in front of the front row as illustrated in Fig. 18. There are further, in the example illustrated, four control keys 48 along the left side of the key-board 43, these being a correction key 50, a subtraction key 51 and a grand total key 52 and a sub-total key 53. There is, however, further space on the right side of the keyboard for other control keys, f. ex. a repeat key 54, as indicated with mixed lines in Fig. 18.

The keys are maintained in their upper position by springs 55, and, if desired, some of the control keys 48, may be provided with known means, not illustrated, to keep the key in the depressed position until it is released by an appropriate function of the machine or by hand.

The frames 4 are at their front and rear sides adjacent to the lateral side edges of the space 39 provided with half-cylindrical recesses 57, which, when the frames are joined together to a block, together form cylindrical recesses, in which the ends of transverse bars 59 are journalled. These transverse bars 59 have crank-like bent ends. The transverse bars are by springs not shown in the drawings, resiliently maintained in a posiiton, in which their median portion is kept adjacent to the under side of the key board 43. Each of these transverse bars 59 corresponds to one of the numeral keys except the O-key and are thus in the number of nine. Each of the numeral keys l to 9 has a pin 56 projecting from the head of the key downwards through a hole in the key-board 43 so as to rest against the upper side of the transverse bar 59 corresponding to the numeral key in question.

Extending through the Space 39 longitudinally of the machine, i. e. at right angles to the transverse bars 59 and below these there is a feed-bar 60, the crank-shaped ends of which are journalled in the front and rear plates 40 and 41, the forward end extending outside the front plate 40 as illustrated in Fig. 4. This bar is also actioned towards its upper position by a spring not illustrated.

The numeral key 0 has a pin 58 projecting downwards through the key board 43 and resting on the feed bar 60 (Fig. 5). On each transverse bar 59 there is a projection 62, engaging an inclined slot 63 in one of a number of pushing members 65 each pivotally mounted in a recess 66 in thefront face of the frames between the groove 7 and the space 39. At one end of the pushing member 65 there is a iinger 68 pivotally mounted on said member and extending downwards through a second recess 69 of the frame so as to engage the outer end of the stop member 8 situated in the right part of the space between the xed guiding list 20 and the resilient guiding list 26. The finger 68 is kept resiliently from rocking motion in a clockwise direction by a spring 7 9 tensioned between the push-member 65 and a projection 71 on the linger 68.

On the end of the feed bar 60 extending outside the front plate 40 (see Fig. 4) is fixedly mounted an arm '75 on the end of which is pivotally mounted a fixture 77 for a pawl member consisting of two bent steel wires 77 and 78 forming together a generally U-shaped member. The upper ends 80 of the wires are bent at right angle towards the block of frames and by these bent ends journalled in magies' corresponding lodgements in the iixture 77 and main tained in said lodgements by the head of a screw 82. The downwardly extending legs or wires 77, 78 of the U-shaped pawl member are connected by a spring 84 striving to move the lower ends of said legs towards each other. The lower ends of said legs are bent towards the block of trames and engage a ratchet wheel 86 of special design clearly illustrated in Fig. 4. This ratchet wheel 86 is fixedly mounted on the forward end of the shaft 30 which is journalled in the front plate and rearV plate 41 and which forward end projects outside the front plate 40.

The block of frames comprises in all thirteen frames, of which ten are of the type designed by 4 and described above, i. e. providedy with guide grooves 7 for stop members 8. Counted from the front plate 40 the block comprises the following frames, one frame 9 without stop members on its front face but with a groove for the 1rinobs 18 on the stop members 8 in the following trame on its rear face, one frame 4 of the type above described, one

frame 88 of special design to be described in the following, one frame 89 of the same type as the iirst frame and nine frames 4 of the previously described type.

The stop members of the second frame 4 in the above named row of frames are operated by a push member 91 which differs from the push members 65 above described and operated by the projections 62 on the transverse bars 59. This special push member 91 is illustrated in Figs. 9 and l0 and is operated by a longitudinal bar, called 0-stop bar 93 and disposed parallel with the feed bar 60. This 0-stop bar 93 has its ends tixed to the ends of arms 95 pivotally mounted on the journalled ends of the feed bar adjacent to the inside of the front plate 40 and the rear plate 41. The O-stop bar 93 is actioned upwards by a spring not illustrated and can thus be swung downwards independently of the feed bar 60 by any ot the transverse bars 59 when operated by any of the numeral keys except the 0-key which only operates the feed bar 60. The arm adjacent to the front plate 40 has a pin 98 extending rearwards and resting against the upper edge of the push member 91. This further diiers from the push member by the fact, that it has no groove 63. Otherwise push member 91 is similarly with the push member 65 provided with a rockable springoperated finger 68.

Driving mechanism All the operations of the machine for performing a computing operation as described in description of the working oi the machine following the description of its construction, are operated by two driving members of which one is the slide 38 above mentioned and the other is the rack 35 also mentioned before.

These two driving members are operated by the driving mechanism illustrated in Figs. l and 2. poltion of the machine there are two vertical supports 100 fixed onto the base plate 1 on either side of the slide 38. A transverse shaft 102 is journalled in the upper ends of said supports. The forward ends of the slide 38 and of the rack 3S proiecting in front of the block of frames are each by a link 104 connected with the lower end of an arm 106 and 103 respectively. The arm 106 connected with the rack 35 is lixed on the right end of the transverse shaft projection on the outside of the right support 100. Adjacent the inside of the same right support 100 there is fixedly mounted on the transverse shaft 102 a shorter arm 109, having a roller 11.0 journalled on its end. At distances from both supports 100 between these the second arm 103 is pivotally mounted on the shaft 102 and held in axial position on the shaft by distance tubes 112 and 114 surrounding said shaft. This second arm 108 has an extension supporting a pin 116, on which is journalled a roller 118. An actuating lever 120 having the form of a iiat iron piece bent into the form of an U-shaped stirrup, is by means of journalling pins 122 fixed on its legs journalled in holes in the front provided in the supports below the shaft 102. The legs of said U-shaped stirrup lever 120 are shaped in the manner illustrated in Fig. l to form driving cams 124 and 125, with which the rollers and 118 cooperate, so that when the actuating lever is depressed, the arms 106 and 108 are free to be rocked according to the form of the respective cam to pull the rack 35 and the slide 38 towards the operator under the action of springs illustrated in Fig. l only. A spring 127, strives to return the actuating lever 120 to its normal upper position, while 123 keep the rollers 110 and 118 independently or each other against the cams 124 and 125. As shown in Fig. l, the active surface of the cam cooperating with the roller 118 mounted on the lever 108 connected with the slide 38 begins to cooperate with the roller 118 at an earlier stage of the rocking motion of the lever 120 than the beginning of cooperation between the roller 110 and the active surface of cam 124, which, however, because of its steeper inclination relatively to its direction of motion brings the roller 110 to the end of its moving stroke earlier than the cam 125 brings the roller 118 to the end of its stroke. Thus the slide begins to move earlier than the rack 35 and continues its forward movement after the rack 35 has reached the end of its stroke. Also during the return stroke of the actuating lever 120 under the action of the spring 1.27 exceeding the action ot both springs 128 together the slide 38 begins its return stroke towards the rear of the machine earlier and ends it later than the rack 35.

Rearwardly of the block of frames there is a support 130 for the totalizer 132 illustrated in Fig. l as a pinion with ten teeth but comprising in reality a number of coaxially arranged pinions equal to the number of decades ofY the machine, i. e. nine decades in the example illustrated. The totalizer forms no part of the invention and may be ofany known design. Below the totalizer 132 there are a number of driving pinions 134 equal to the number of pinions in the totalizer, said pinions 134 being connected to their common shaft 136 by springs permitting oi resilient rotation of the pinions 134 in either direction from a normal position in relation to the shaft 136. Fixedly mounted on the right end of the shaft 136 of the driving pinions 134, which end extends above the rack 35, is Iixedly mounted a pinion 13S engaging said rack. The totalizer 132 is mounted on a vertical slide permitting to displace the totalizer vertically by means to be described in the chapter Control mechanism.

The slide 38, which extends through nearly the whole length of the machine rests on the base plate 1 and is guided sideways by the supports 100 of the driving mechanism at its forward end, by the sides of the lower recess 36 in the frames of the block of frames and by further supports rearwardly of said block as described further on. This slide is provided with dilierent projections and recesses serving to operate different parts of the machine during the forward and rearward reciprocating motion of the slide during a machine operation. The arrangement and shape of these projections and recesses will become clear from the description of the control mechanism and of the working of the machine.

Actuator mechanism To transmit the motie-n from the driving mechanism to the totalizer dependent in each decade from the figures set on the numeral keys, there are nine actuator bars 140 having three main parts, i. e. abutment means 142 at their forward ends adapted to cooperate with the stop members 8 when pushed down to active position when depressing a corresponding numeral key 47, a rack portion 149 cooperating with both the driving pinion 134 and the totalizer 132, and a printing type bar 364 at their rearward end.

As illustrated in the drawings, these actuator bars 140 are made of one single strip of sheet steel of just'suflicient. thickness not to be subject to undue elastic deformations by 'longitudinal compression.

essaies The forward end of the actuator bars or strips 140 is bent upwards to form an abutment 142 as clearly illustrated in Fig. 5. In the sides of this upward bent end abutment 142 there are two recesses 143, by which the forward end of the bars is guided along the edges of longitudinal slots 144 in a guiding plate 146 passing horizontally through the openings 6 of the frames in the extends between the driving pinions 'i3-i and the pinionsV of the totalizer 132. They are constantly engaged with the driving pinions 134 but are only engaged by the totalizer wheels when the totalizer is in its lower position. Below the forward abutment end 142 of the actuator bars or strips there is xed thereto an abutment 150, having a forwards and upwards inclined front surface and a vertical rear surface. This abutment, hereinafter called the locking abutment 150, has for its purpose to permit the cooperation of each bar with a locking pawl 152 adapted to retain the actuator bar in its initial position Vwhen the figure to be transmitted by it is 0, i. e. when no stop member is set in active position in the corresponding decade so as to prevent the bars in these decades to slide idly to and fro during the operation of the machine. The locking pawl 152 is actioned by a spring 154 lodged in a bore 156 in the third frame S8 from the front plate 40 of the block of frames and keeps normally engaged with the locking abutment 150. The locking pawls 152 are pivotally'mounted on a transverse shaft 158 mounted at the forward end of the central channel formed by the openings 6 of the frames in the block of frames and aremaintained in their place in alinement with each actuator bar 140 by distance washers 160. The locking pawls 152 present each a portion 162 extending upwardly to near the upper edge of the openings 6 and a portion V1.64 extending forwardly to the outside of the front plate' 40. A plate 166 slidably mounted on the outside of the front plate 44) lcooperates with projections 168 on the slidejwhen the slide 3S is in its normal rest position and cooperates with its upper edge with the portions 164 of therlocking pawls 152 so as to keep them out of engagement with the locking abutments 150 as long as the slide is in its rest position. The plate 166 is slidably guided on the front side of the front plate 40 by means of grooves 168 engaging pins 170 in the front plate and is actioned by springs 172 striving to move the plate 166 downwards in engagement with the slide 3S. The projections 16S have a rearward surface inclined downwards towards the slide so as to permit the progressive lowering of plate 166 at the beginning of the reciprocating motion of the slide 38 and the progressive lifting of the plate 166 at the end of the return motion of the slide.

Means to return the stop members to their inactive position either after having performed their function or for correction of a figure set on the numeral keys, form really a part of the setting mechanism, but have not been described in the corresponding chapter because the previous description of the driving and actuator means was necessary for their comprehension.

These means are formed by the guide plate 146 being movable upwardly to press all the stop members S lowered to active position and within the reach of the end abutments 142 of the actuator bars, back to their inactive position, which is made possible by the guiding list 26 of the corresponding portion of the rows of stop members being resilient and capable to be pushed back by the inclined inner side of the outer grooves of the stop members 8. For this purpose, the forward edge of the guiding plate 146 (Fig. 4) has a projection 175 having a recess 176 engaged lby a restricted portion 177 of a vertical slide bar 178 guided by means of a slot 180 on two screws 182 projecting on the outside of the front plate 40. This sliding bar 173 is by means of a pin 184 and an arm 186 connected with a shaft 188 journalled in a bore passing through the whole of the block of frames including the front and rear plates 40 and 41 and having rearwardly of the rear plate 41 (see Fig. 6) xed thereon a second arm 200, which is connected with the downwardly bent rear end 262 of the guiding plate 146. To permit the passage of the actuator bars through said rear end portion 202 of the guiding plate 146, said portion has a corresponding opening 204. Outside the front plate 40 the shaft 18S has an upwardly extending arm 206 fixed thereon and provided with a bevelled end surface 203. This bevelled surface cooperates with the bent out end of a pin 210 fixed in the head of the correction key 50, so that when said key is depressed, the arm 206 is swung countercloekwise, as seen in Fig. 4, and by means of shaft 188, arms 136 and 200 and by the slide bar 178 lifts the guiding plate 146 towards the upper surfacev of the channel formed by the openings 6 in the frames in the block of frames, thus pressing all the stop members previously brought into active position back to their idle position. The forward abutment ends 142 of the actuator bars are also lifted by this movement of the guiding plate 146, which is made possible by a special groove 212 in the frame 88 forwardly of the groove provided for the knobs 18 of the stop members 8 guided in the first of the nine frames 4 corresponding to the nine numeral keys l to To obtain an automatic return of the stop members to their idle position at the end of a computing operation, i. e. towards the end of the return stroke only of the slide 38, the lower end of slide bar 178 is hinged to a shutter-like member 214 which can be turned towards the front end of the machine but in the opposite sense cannot be turned further than to the prolongation of the slide bar 178. A projection 216 on the slide 38 situated near the forward end of the channel formed by the recesses 36 of the frames in the block of frames has a steep forward surface and an inclined rearward surface, so that said projection 216, when moving forwardly with the slide 38 turns the shutter-like member 214 out of its way, but on the return of the slide 38 to the rest position lifts said shutter-like member 214 and thereby the slide bar 178 upwards, thus lifting the front portion of the guiding plate 146, the rear part of which is then also lifted by transmission of the motion of the forward end through Vpin 184, arm 186, shaft 18S and ann 200.

To return those of the stop members, which have not been returned to their idle position while in position opposite the guiding plate 146, there is a special bar 216 extending Vlongitudinally through the left side portions of the channel formed by the openings 6 ofthe frames in the block of frames. This bar 216 has a surface which is eccentric in relation to the arched edges of the openings 6 so as to form a guide surface', which from the upper to the lower end of the opening between the guiding lists 24 and 20 comes progressively nearer the edges of the openings 6.

Cont/0l mechanism On the upper face of the key-board d3 longitudinally of the row of control keys 43 and besides these is journalled a shaft 220. This shaft as shown in Fig. 3 is provided with radially extending pins 222 and 224, which in the normal position of the shaft extend to about the middle between the heads of the adjacent control keys 51, 52 and the key-board respectiveiy to the underside of the head of key 53. Thus, when depressing key 51 or 52 the shaft is rocked only about half the angle, through which it will be rocked by depression of key 53.

As illustrated in Fig. 6 an arm 226 is ixedly mounted on the rear end of the shaft 220 rearwards of the rear plate 41 and the end of said arm 226 is pivotally conlne'ctedwith the `upperfend of a link bar 228theflower endy of-which is' linked tofone arm of an angle lever- 230, which-"'-is'pivotally mounted on an extension 232 of a ve'ticajl support plate 234 shown in Fig. 16. The other ami 236 ofthe angle lever 230 is pivotally connected to an eye 23S-Ona transverse control slide 24()y guided in slots in thesupport plate 234 and another support plate 242 mounted Von the base plate at the opposite side of the slide 38. It is understood, that the control slide 240 thus depending-of the control key depressed or the absence of' depression of any control key can take any of three different positions; one (shown in Fig. 16) being the rest position,v a second position being taken when any of keys 51' or 52 are depressed and a third position being taken When'key 53 is depressed.

Thel control slide 246 has a vertical harige 243 projecting from its rear edge andprovided at its upper edge with three rectangular recesses 244, 245 and 246. A shaft 248l is' journalled in the support plates 234 and 242. Three-pins V250, 252' and 254 are fixed radially on the shaft 248 in such positions, that pin 250 is opposite recess 244 in the first position of control slide 240, pin 252 is opposite recess 245 in the second position of control slide 240 and pin 254 is opposite recess 246 in the third position of control slide 240. Each of the three pins 250, 252 and 254 (see -Fig. 17) lengages a peripheral slot 256 in a bushing 258 rotatable on shaft 248 within the limits of the slot 246. Each of the three bushings 258 has a spade-shaped radially extending flange 263 with a straight outeredge 262. Springs 264 fastened with one end to the shaft 248 and having their other ends resting on the spade-'shaped flanges -260 keep said flanges and their bushings 258 in the position limited by the pin 252 abutting the end of the slot 256, which is most remote from the anges 260.

On the under sides of the flanges 260 and bushings 258 are abutments 280 extending radially from the bushing over the upper edge of ange 243 on the control slide 240 and having a width in the axial direction of shaft 248 which is slightly less than the width of the recesses 244, 245 and 246 respectively in the flange 243. From the foregoing it willthus be clear, that in any one of the three positions of control slide 240 above described, f. ex. the first position, only one of the abutments 280 will be able to engage the corresponding recess, f. ex. 244, while the two other abutments will abut against the upper edge of the flangel A243 besides the corresponding recesses, f. ex. 245 and 246.

Ah arm 2661is lixedly mounted on the right end of the shaft 248 and is linked to a bar 268, the lower end of which is guided by a pin 270 extending at one side of the'bar 268 through a vertical slot 272 in the support plate 242 and projecting on the other side of the bary 268 to form a pivot for a roller 274. ln the rest position of the slide 3S, roller 274' engages a recess 276 in said slide, which recess has an inclined side 278 (Fig. 14) ascending rearwardly'progressively to the top surface of the slide 38.

Behind the control slide 240 there is' another transverse slide 282, hereinafter called the shift slide, which is guided by its ends 284 in corresponding recesses 286 in forwardly projection portions 28S of the sides of the xed support 130 of the totalizer, as illustrated in Figs. 14, l5 and l`6. Two pins 290 project rearwards from said shiftslide 282 and engage inclined grooves 292 provided in a front plate 294 of the vertical slide in which the tot'alizer is mounted. Thus, considering Fig. 16, when the shift slide 282 is shifted' to the left, said front plate 294 and the vertical slide will be displaced downwards to bring the pinions 132 of the totalizer into engagement With the rack-portions 149 of the actuator bars 140.

The shift slide 282 has three vertical bores 296 adjacent the right end of the edge 262 of each of the spadeshaped anges 260. Three pins 298, 299 and 300 are slidably guided one in each of said bores 296. ,Said pins have near their upper ends a recess engaged by the corresponding flange 260. The flanges 260 have suliicient width transversely ofv the machine to keep-engaged lwith the recessesl inthe pins 29. 299, 300 during the whole lateral displacement of the shift slide 282.

Guide grooves 310, 320 and 330 are provided in the operating slide 38. Groove 310 has a straight portion 312 which considered in the rest position of the slide 38 extends from under the lower end of pin 298 rearwardly on a length corresponding to the stroke of the slide 38 when operated. This straight portion 312 has a depth, whichis decreasing rearwardly. From the rear end of said straight portion extends a curved portion the depth of whichat its rear end is greater than the depth of the adjoining rear end of the straight portion 312. This curved portion has an inclined portion 314 forming a pointed angle with the straight portion 312, a longitudinal portion 316 parallel with the straight portion 312 and an inclined portion 318 rejoining the straight portion 312 at a little distance from the forward end of the groove. The depth of portions 314, 316 and 318 is decreasing from the rear to the forward end, sothat portion 318 at the locus where it rejoins the straight portion 312 has less depth than the latter.

The guide groove 320 has, considered in the plane view of `Fig. 17 the same shape as groove 310 but the depth of the straight portion 322 is decreasing from the rear end to the point at which the inclined portion 328 is rejoining the straight portion, while the forward end of the straight portion and the last mentioned inclined portions 328 have greater depth,l which is decreasing rearwards along the inclined portion 328, thelcngitudinal portion 326 and the inclined portion 324.

TheV groove 320 has uniform depth and extends from below pin 300 a short length 332 rearwards, then obliquely along an inclined portion 334 and then along a longitudinal portion 336 extending to a point in transverse alinement with the rear ends of grooves 310 and 320.

Printing mechanism As usual in machines of the kind concerned there is a support 350 for a supply reel 352 of paper strip 354 at the upper rear end of the casing 2 and journalled within the cover 2 of the casing there is a printing plate 356, cooperating, in known manner with pressure rollers 358 and paper guide strips 360 at its underside.

The rear ends of the actuator bars are formed with a straight portion 362 supporting a type bar 364 with printing characters 365 attheir upper side. The rear end of Said supporting portion 362 is guided in a stirrupshaped guide member 366 guided for vertical motion by slots 368 engaged by a transverse bar 370 supported by two arms 372 and guided by its ends in vertical slots in supports 374'mounted on the base plate 1 on either side of the slide 3S. The lower ends of the arms 372 are pivotallyr connected with another pair of arms 376 mounted' for rotation about pins 378 journalled in the supports 374. The arms 372 and 376 are at their adjacent ends provided with rearward extensions presenting an archedA abutment edge 380. The rearmost end of the slide 38is`bent` upwards and forwards to form an abutting edge 382 at the level of the arched edges 380. The distance between these edges 380 and the abutment edge 382 of the` slide 38 is4 such, that the slide 38 at the end of its forward stroke presses against edge 380 by its edge 382 and thereby presses the rear end of the actuator bar 140 together with the type bar 364 upwards so that the type 365 thereon facing the lowermost portion of the platen 356 is pressed against said platen. Any known means to apply printing dye to the characters or to guide and feed an inking ribbon between the types and the platen may be used in connection with this printing means and has not been illustrated in the drawings. t l In order to render the figures printed on the strip 35 at the underside of the platen 356 visible immediately after printing 'and until the following printing operation figure in said amount.

Vis performed, I provide means to rotate the platen 356 counter-clockwise immediately before printing and to return the lplaten to its initial position immediately after printing. Thus the place of the strip, on which the printing is to be effected, is irst turned downwardly to the lowermost portion of the platen and thereafter returned to a` place visible from the front side of the machine.

For this purpose l provide a cam-like projection 384 on the slide 38 having a slowly ascending surface on its front side. A roller 386 disposed in the path of motion of said cam 384 due to the motion of the slide 38, is journalled on an arm 388 of a double lever, the second arm 390 of which extends upwards and by a slot 392 engages a pin 394 on a member connected with the platen 356, preferably a ratchet wheel or the like forming part of the line feeding means for the platen. Other known means for feeding the paper strip one step besides the above described turning to disclosing position may of course be provided and are not illustrated.

In the lforegoing description of the construction of my machine I have for clearness sake omitted such details, which are not necessary for the fundamental functions of the machine, but it is clear that this construction is Y capable of developments and additions increasing the possibilities of different` operations to be performed with my machine. Concerning the totalizer, which forms no part of the invention, l have also omitted all the control means necessary for the correct function of said totalizer, such as the transfer of one unit from a totalizer pinion passing from the position corresponding to the Figure 9 to the Figure or vice-versa tothe totalizer pinion to the left thereof, the control stop means for the totalizer pinions in the position 0 for the extraction of a positive total, the operation of such stop means in dependance of the positive or negative character of the amount accumulated in the totalizer for obtaining a correct disclosing of a negative total, means permitting the successive entering of the same amount several times into the totalizer without necessitating a re-setting of the amount on the l numeral keys and other functions generally capable of being performed in machines of the kind described and obtainable by means so generally known, that they need not be described in this connection.

To facilitate the understanding of the construction above described, I have, in the following described the function of the machine.

The most ordinary Voperation performed on machines of the kind described is an adding operation, which is eiected in the following manner:

Addition p Starting from the rest position of all the parts described, as they are shown in the accompanying drawings, with the exception of Fig. 8 and of the stop members 8a and 8b in Fig. 5, the amount to be entered into the totalizer is set on the numeral keys starting from the left Let us admit, that the gure 102 is to be entered as a positive post into the totalizer, i. e. is to be added. For this purpose numeral key 1 is first depressed. Thereby the corresponding transverse bar 59 i. e. the rst transverse bar 59 from the left in Fig. 5 is swung downwards by the pin 56 fixed in the head of the key and the projection 62 on said transverse bar 59 operates the push member 65 as illustrated in Fig. 8, thereby displacing the stop member situated below finger 68of said push member to its lower active position. Simultaneously the feed bar is swung downwards by the transverse arm 59, whereby arm 75 (Fig. 4) is swung upwards and by means of the pawl member 78, 79 rotates the ratchet wheel 86 one sixteenth of a revolution, which corresponds to half the angular distance between two adjacent teeth or in other words half the rotation step necessary to displace all the rows of stop members 8 along their grooves 7 in the frames 4 one step, i. e. one time the width of the stop members by means of shaft 30, cog wheels 32 and the knobs 18 of the stop members engaged by the said cog-wheels. This displacement of the stop members 8 takes place within the space between the fixed guiding list 20 (Fig. 11) and the resilient guiding list 26. When the pawl 78, 79 has performed this half step of the rotation of the ratchet wheel 86, the opposite pawl member 79 has reached past the following tooth of the ratchet wheel, and engaged the recess behind said following tooth. When the numeral key depressed is released, the transverse bar 56 is returned by its spring (not shown) whereby the projection 62 thereon returns the push-member 65 to its initial positionl specially illustrated in Fig. 7. Simultaneously the feed bar 60 is returned to its initial upper position by its spring (not shown) whereby arm (Fig. 4) is swung downwards and the leg 79 of the pawl rotates the ratchet wheel 86 the second half of its rotation step, thus displacing all the rows of stop members 8 the second half of their displacement step, thus bringing the depressed stop member above the iirst actuator bar from the right as seen in Fig. k3. By the downward-swinging motion of the transverse bar 59 the O-stop bar 93 (Figs. 3, 9 and 10) is also swung downwards, thus operating the special push member 91, which by its linger 68 displaces the corresponding stop member 8b downwards, which stop member of course simultaneously with all the other stop members is displaced one step along its guide groove in its frame.

Thereafter the numeral key "0 is depressed, and as this key by means of pin 58 operates the feed bar 60 alone, all the rows of stop members are displaced one step by means of arm 75, pawl 78, 79, ratchet wheel 86, shaft 30 (Fig. 4), cog wheels 32 and knobs 18 (Fig. 3), but without displacing any stop member to its lower position. As the O-stop bar 93 is not operated by any transverse bar 52, no stop member is either displaced to its active position in the foremost row of stop members.

Finally the numeral key 2 is depressed thus depressing a stop member 8 in the second row from the front of the nine rows of stop members corresponding to the numeral keys 1 to 9, i. e. in the row immediately to the right of the depressed stop member 8a shown inFig. 5, all the stop members being simultaneously fed one step towards the front in the upper part of the rows. Simultaneously a stop member 8b will be set to active position by means of the O-stop bar 93 and the special push member 91. When the settling operation thus has been performed the stop member 8a of the iirst of the nine rows of stop members corresponding to the numeral key 1, has been displaced to a position facing the third actuator bar 140 from the right in Fig. 3 in its active position, and the stop member of the second of the nine rows corresponding to numeral key 2 is in its active position facing the first actuator bar from the right in Fig. 3. In the foremost row of stop members 8b (to the left in Fig. 5) the stop members facing the third and the iirst actuator bars 140 from the right in Fig. 3 are in their active position. All the other stop members are in their idle position, i. e. have their inner guide groove 14 (Fig. 13) engaged yby the guiding lists 20, 24 or 26 (Fig. l1), except the stop members within the space between the ixed guiding lists 24 and 20, which may be in any position without disturbing the function of the machine. All the stop members thus set into active position are engaged by the resilient guiding list 26. If a correction of the amount set on the keys is desired, the correction key 50 (Figs. 4 and 18) is depressed. Its pin 2li) swings arm`206 to the left, rotates shaft 188 and by means of the arm 186 and the slide bar 178 (Fig. 4) and the arm 200 (Fig. 6) lifts the plate 146 in which the actuator bars are guided.

The abutment ends 142 of the actuator bars (Fig. 5) enter the groove 212 so that the plate 146 can be lifted n against the upper edges of the openings 6 in the frames and press all the stop members 8 set to active position back to their idle position, the resilient guiding list 26 being pushed back by the sloping surfaees'of the outer 13 grooves 15 in the stop members. Then the correct amount can be set as described.

As an addition has to be performed, none of the cont'rol keys 51, 52 or 53 is depressed.

To perform the adding operation, the actuating lever 120 is swung downwards by depressing it with the palm of the hand, with which the amount has been setv on the keys. The roller 118 (Fig. 2) first reaches the cam surface 125 (Fig. 1) on the left leg of the U-shaped actuating lever 120, permitting the arm 108 to be swung in clockwise'direction (Fig. 1), thus displacing the slide 38 a certain distance forwards before the roller 110 reaches the-cam surface 124 on the right leg of the actuating lever 120 and permits the forward displacement of the rack 35'. These displacements are performed under the action of springs 128 acting on the arms 108 and 106 respectively.

During this first portion of the displacement of the slide 38, before the rack 35 starts its lirst forward stroke, the following functions are performed:

The projections 168 on the slide 38 (Fig. 5) travel past the plate 166, which by the springs 172 is displaced downwardly and thereby permits the locking pawls 152 which are not retained in their inactive position illustrated in Fig. by a stop member 8b set simultaneously with the stop members set to active position in the rows corresponding to the numeral keys 1 to "9, to rock counterclockwise as seen in Fig. 5. In the example illustrated above, in which the figure 102 has been set, the locking pawls 152 facing the first and the third actuator bar 140 from the right in Fig. 3 are retained in idle position, while all the other locking pawls 152 are rocked to' engage the locking abutment 150 on the underside of the corresponding actuator bars.

The projection 216 on the slide also travels past the shutter-like member 214 at the lower end of the slide bar 178 and swings it forwards without actioning the slide bar. In the control mechanism (Figs. 14, and 16)y the sloping side 27S of recess 276 pushes the roller 274 upwards, which through the bar 268, and the arm 2'6'6 turns the shaft 248 in the clockwise sense as seen in Figs. 14 and l5. Thereby the bushings 258 are released by their respective pins 250, 252 and 254 respectively for rotation with the shaft 248, but only the bushing 258: near the right end of the said shaft is permitted to rotate with the shaft by its abutment 280 entering the recess 244 of ange 243 on the control slide 240, while the other two bushings are maintained in their initial positions by their abutments 280 resting on the upper edge of the ange 243 besides the corresponding recesses 245 and 246. Thereby the iiange 260 on the bushing 258 which is free to rotate under the action of the spring 264 presses the corresponding pin 298 downwards, so that its lower end engages the forward end of the groove 310 in the slide 38 illustrated in Fig. 17. The two other pins 299 and 300 are maintained in their upper positions by the' anges 260 of the bushings 258 retained in their initial position by their abutments 280. Thereafter pin 298 is guided by the straight portion 312 of groove 310 to a' point in transverse alinement with the points where the longitudinal portions 316 and 326 of grooves 310 and 320 meet the inclined portions 318 and 328 of said grooves. As long as pin 298 cooperates with the straight portion 312 of groove 318 the shift slide 282 remains in itsv initial rest position thereby maintaining the vertical slide' 294, supporting the totalizer in its upper position and thus with the totalizer pinions 132 out of engagement with the rack portions 149 of the actuator bars 140.

At this moment of the travel of slide 38 the roller 110 in the driving mechanism (Figs. l and 2) reaches the cam surface 124 and the rack 35 begins its forward stroke in the manner above described, while the slide 38 continues its forward stroke. During the forward stroke of the rack 35 the pinion 138 and the shaft 136 are rotated one complete revolution. The driving pinions 134, resiliently operated by shaft 136 strive to displace 14 the actuator bars 140A rearwards. Those actuator bars which areA retained by the locking pawls will, however, not move, and the other bar; will be stopped by the set stop members 8 after a travel corresponding to one digit set in the corresponding decade of thek machine. During this travel, the actuator bars do not actuate the totalizer pinions, which are out of engagement with the actuator bars. Thus, in the numeric example given above, only the first and the third actuator bars from the ri-ght will move, the rst bar unt-il it is stopped in the second of the nine rows of stop members corresponding to the numeral key 2 and the third bar until it is stopped in the first row of stop members corresponding to the numeral key 1. Thereafter the actuator bars are retained by their respective abutments and the driving pinions 134 are thus also retained, while pinion 138 continues its rotation until it has performed an entire revolution, which is possible because of the resilient oonnection between the driving pinions 134 and shaft 136.

When roller has reached the inner end of cam surface 124, i. e. when the rack 35 has fulfilled its forward stroke, the slide 38 has reached a position, in which pin 298 is situated in the portion 312 of the groove 310 (Fig. 17) in transversal alinernent with the points, at which the longitudinal portions 316 and 326 of the grooves meet the rear oblique portions 314 and 324 respectively. During the rest of the forward stroke of slide 38 the rack does not move. During this last portion of the forward stroke of the pin 298 slides 4in the rearmost portion of the straight part 312 of the groove 310 and at the end of said stroke falls down in the deeper end portion of the inclined part 314 of the groove. During this last port-ion of the forward stroke of the slide 38 the cam-like projection 384 (Fig. l) lifts the roller 386 and yby means of arms 388 and 390 and pin 394 turns the platen 356 to bring the part of the tape situated in the disclosing pos-ition outside the cover 2 to the printing position at the lowermost generatrix of the platen. Thereafter the abutment edge 382 of the slide hits the curved edges 38o of the arms 372 and 376 and presses the characters 365 of the type bars 364 situated in position vertically below the axis of the platen 356 against the paper strip to print the signs corresponding to the figure set on lthe numeral keys and corresponding to the displacement of the actuator bars in the different decades of the machine.

When the actuating lever is released and swung back to lits initial rest position by the spring 127, the slide starts its return or rearward stroke and after a portion of this rearward stroke of the slide the rack 35 starts its return or rearward stroke. During this first portion of the rearward stroke of the lslide 38 the pin 298 now engaging the portion 314 of the groove 310 is displaced to the left, whereby the slide bar 282 also is displaced to the left and by means of pins 290 presses the vertical slide 294 supporting the totalizer pinions 132 downwards, vbringing said pinions into engagement with the rack portions 149 of the actuator bars 140. During ysaid first portion of the rearward stroke of the slide 38 the printing means are also returned to their initial positions and the platen is turned so as to bring the ligure printed at the underside of the platen within view range of the operator.

When, after this first portion of the rearward stroke of the slide 38 the rack 35 begins its rearward stroke, the pinion 138 and shaft 136 are turned counterclockwise (seen as in Fig. l) and after the rotation of the shaft 136 to the respective positions, in vwhich the driving pinions had been stopped during the forward stroke of the rack 35, the said driving pinions are rotated counterclockwise to their initial position, thereby returning the actuator bars to their initial or rest positions. During these displacements of the drivingl pinions 134, the totalizer pinions, now in engagement with the rack portions 149 of the actuator bars 140 are rotated inl correspondence to the returned to its upper rest position with the totalizer pinions 132 out of engagement with the actuator bars 140. Thereafter, when pin 298 has sunk down in the deeper portion of the straight part 312 of the groove 310, the roller 274 rolls down the sloping side 278 of recess 276 in the slide (Fig. 14) and turns the shaft 248 back to its initial position, whereby pin 298 is lifted out of engagement with groove 310 to its initial rest position. During this last portion of the rearward stroke of the slide 38 the projection 216 (Fig. 5) on the slide'reaches the shutter-like member 214, which cannot be swung rearwards and thereby shifts the slide bar 17S upwards, thereby lifting the guide plate 146 at its forward end and by means of arm 186, shaft 188 and arm 200 also vat its rearward end. Thereby the stop members set into active position at the beginning of the adding operation are returned to their p upper position and the setting mechanism is thus emptied. Last in the rearward stroke of the slide 38, the projections 168 thereon cooperate with the guide plate 146 to lift the same, thereby rocking all the locking pawls 152, to their inactive position illustrated in Fig. 5.

Thus all the parts have been returned to their initial rest positions except the totalizer pinions, which have been turned corresponding to the entering in adding sense of the amount set on the numeral keys at the begining of the adding operation.

Subtraction and total taking To operate a subtraction the figure to be subtracted is set on the numeral keys in the manner described in connection with the adding operation. After setting the figure on the numeral keys 47, the subtraction key 51 is depressed. Thereby kthe pin 224 on shaft 220 (Fig. 3) is depressed and turns the shaft 220 an angle corresponding to about half the distance between the head of key 51 and the key-board. This rotation of shaft 220 is trans mitted through arm 226 (Fig. 6), bar 228 and lever 230 to the control slide 240 (Fig. 16) whereby said slide 240 is displaced to the right with the recess 245 facing the abutment 280 on the bushing 258 disposed about in the middle of the shaft 248. Thereby the recess 244 is clisplaced away from the abutment on the right hand bushing 258. Subtraction key 51 or any other part in the transmission between key and control slide 240 is maintained in'this position by any known type (not illustrated) maintaining the slide 140 in the shifted position at least until the subtracting operation has begun and is released thereafter by any appropriate means or by hand.

When the actioning lever 120 then is depressed, all the functions previously described in connection with the adding operation are repeated with the exception, that pin 299 (Fig. 17) and not pin 298 is depressed so as to be guidedby groove 320. Thus, during the forward stroke of the slide, pin 299' will slide along the inclined portion 328 of the groove 320, displacing the shift-slide 282 at the beginning of the forward stroke and thus bringing the totalizer pinions into engagement with the actuator racks 149 beforethey move rearwards. At the end of the forwardvstroke of the slide 38, when pin 299 has reached the rearmost end of the groove 320, the totalizer pinions are again out of engagement of the actuator racks and remain out during the return rearward stroke of the slide, during which pin 299 slides along the straight portion 322 of the groove 320. Thus the amount set on the numeral keys has been entered into the totalizer in a sense y at the end of the forward stroke of the slide.

For total taking, the total key 52tis depressed. ,As this key actions a pin having the same position on shaft 220 (Fig. 3) as pin 224 for the subtraction key 51, or this latter pin being placed between keys 51 and 52 and extending under the heads of both keys`51 and 52, the control mechanism is actioned in the same manner as for subtraction. Key 52 is however connected with means not shown to maintain all the locking pawlst152 in the inactive position, f. eX. by locking plate 166 in the upper position or by lifting the guide plate 146 a little distance, suflicient to lift the locking abutments 150 out of reach of the locking pawls 152 but not sulcient to engage theabutment ends 142 of bars 148 into the groove V212. Key 52 further operates means not shown but generally known to prevent the totalizer pinions to turn past their Oposition. When the actioning lever 120 then is operated without any figures having been set on the numeral keys, all the actuator bars are free to move rearwards in engagement with the totalizer pinions and are stopped by these when they reach their respective O-po'sition. Thus each actuator bar has been displaced a distance corresponding to the number contained in the respective decade of the totalizer, which amount is printed During the return stroke, the totalizer pinions 132 are not engaged and remain in their O-position while the totalizer bars are returned as described herebefore. y

When a sub-total is to be taken, the sub-total key153 is depressed. This turns by means of pin 222 the shaft 220 (Fig. 3)` an angle corresponding to the whole distance between the head of key and the key-board 43, thereby the control slide 240 is displaced to the right with its left recess 246 facing the abutment 280 on the left of the bushings 25S, so that now only pin 300 will cooperate with its groove 330. Y During the forward and rearward stroke of the slide 38 the shift slide 282 will be displaced to the left at the beginning of the forward stroke and returned to the right only at the end of the rearward return stroke of the slide 38. Thus the totalizer pinions will be kept in engagement with the actuator bars during both the forward and the rearward strokes of the rack 35. s The subtotal key operates the same means as the total key 52 to keep the locking pawls 152 out of action and to stop the totalizer pinions 132 in the 0-position. Thus, when performing a subtotal-taking operation the amount accumulated in the totalizer will be taken out by the actuator bars during their rearward stroke, printed at the end of said rearward stroke corresponding to the forward stroke of the slide 38, and then reentered into the totalizer pinions during the return stroke of the rack 35 and the slide 38, at the end of which all parts are returned to their rest positions andthe totalizer pinions to the same vpositions as before the sub-total taking operation.

What I claim is:

l. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keysand adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simul taneously displaced one step to the next higher demoninationalorder of the machine transversely of the direction of their individual displacement when set by depression Vof a numeral key and of the direction of displacement of reciprocable actuator members cooperating herewith,in which said stop members of each of said rows are loosely alined to each other and guided in a fixed guide along at least a portion of which the stop members are guided for stepwise displacement in either inactive position, the stop members situated in a limited portion of each of said guides being adapted for cooperation with driving means for their simultaneous stepwise displacement to a higher denominational order and the stop members situated outside said limited portion being displaceable along said guides by the pressure exerted thereon by the stop members cooperating with said driving means.

2. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, saidstop members being arranged in a number ot rows corresponding to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and or' the direction of displacement of reciprocable actuator members cooperating therewith in which said stop members of each of said rows for their stepwise displacement are guided in a fixed guide in direct Contact with each other, the stop members situated in a limited portion of each of said guides being operable by a driving member common for all of said rows for synchronous stepwise transverse displacement to a higher decade and the stop members situated outside said limited portion being displaceable along said guides by the pressure exerted thereon by the stop members cooperating with said driving means.

3, A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number or rows correspending to the number of digits in each denominational order of the machine, all ci said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and of the direction of displacement of reciprocable actuator members cooperating therewith in which said stop members of each et said rows for their stepwise displacement are guided in a xed guide in direct contact with each other, the stop members situated in a limited portion of each of said guides being operable by a driving shaft extending transversely of said rows and having feeding members engaging the stop members within said limited portions of each of said guides for synchronous stepwise transverse displacement to a higher decade and the stop members situated outside said limited portion being displaceable along said guides by the pressure exerted thereon by the stop members cooperating with said driving means.

4. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number or digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and of the direction of displacement of reciprocable actuator members cooperating therewith in which said stop members of each of said rows for their stepwise displacement are guided in a iixed guide in direct contact with each other, the stop members situated in a limited portion of each of said guides being operable by a driving shaft extending transversely of said rows and having feeding members engaging the stop members in said limited portion of each of the guides, a ratchet wheel on said driving shaft being operable by a step-feed-mechanism actuated or released by any of the numeral keys when depressed for setting a stop member into active position and for stepwise rotation of said driving shaft for synchronous displacement thereof to a higher decade and the stop members situated outside said limited portion being displaceable along said guides by the pressure exerted thereon by the stop member engaged by said feeding members.

5. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and of the direction of displacement of reciprocable actuator members cooperating therewith in which said stop members of each of said rows for their stepwise displacement are guided in a xed guide in direct contact with each other through an operative portion of said guides in which the stop members are capable of cooperation with the actu` ator members and within an inoperative portion of said guides outside said operative portion, said inoperative portion being situated above or below said operative portions, the stop members situated in a limited portion of each of said guides being adapted for cooperation with driving means for their stepwise displacement to a higher decade and the stop members situated outside said limited portion being displaceable along said guides by the pres` sure exerted thereon by the stop members cooperating with said driving means.

6. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by 'depression of a numeral key and of the direction of displacement of kreciprocable actuator members cooperating therewith in which said stop members of each of said rows for their stepwise displacement are guided in a fixed, closed r endless guide in direct contact with each other through an operative transverse portion of said guide in which therstop members are capable of cooperation with the actuator members and through the remaining inoperative portion of said endless guide, the stop members situated within a limited portion of each of said guides being adapted for cooperation with driving means for their stepwise displacement to a higher decade and the stop members -situated outside said limited portion being displaceable along said guides by the pressure exerted thereon by the stop members cooperating with said driving means.V

7. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction Vof their individual displacement when set by depression of a numeral key and of the direction of displacement of reciprocable actuator members cooperating therewith in which said stop members of each of said rows for their stepwise displacement are guided in a fixed endless guide in form of loopV with two straight portions and two semicircular portions joining the ends of said straight portions, the stop members in earch of said guides being in direct contact with each other and are displaceable through a straight, operative portion of each of said guides, in which the stop members are capable of cooperation with the actuator members, and through the remaining inoperative portions of said guides, the stop members situated within a semi-circular portion of Said guies being adapted for cooperation with driving means for their stepwise displacement to a higher decadel and the stop members situated within the other portions of said guides being displaced by the pressure exerted thereon by the stop members cooperating with said driving means.

8. A computing machine with a number of setting or vnumeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows correspondmg to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and of the direction of displacement of reciprocable actuator members cooperating therewith 1n which said stop members of each of said rows for their stepwise displacement are guided in a iixed endless guide inform of a loop with two straight portions and two semicircular portions joining the ends of said straight portions, the stop members in each of said guides being in direct contact with each other are displaceable through a straight, operative portion ofeach of said guides, in which the stop members'are capable of cooperation with the actuator members, and through the remaining inoperative portions of said guides, the stop members within one or both of the semicircular portions of each of said endless guides being engaged by toothed wheels rigidly fastened onto a shaft, extending transversely of said guides through the centers of said semi-circular portion or portions of each of said endless guides, said shaft being operable by a pawl mechanism actuated by the numeral keys for stepwise rotation of said shaft and for synchronous stepwise displacement of the stop members engaged by said toothed wheels and of the other stop members in each of said rows by the pressure exerted thereon by the stop members thus displaced, the actuator members being displaceable through the space between said two straight Aportions of said guides.

9. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and of the direction of displacement of reciprocable actuator members cooperating therewith in which said stop members in each of said rows are displaceable in a iixed guide in direct contact with each other, stop members in a limited portion of each of said guides being operable for stepwise displacement to a higher decade and the stop members in the remaining portions of each of said guides being displaceable by the pressure exerted thereon by the stop members thus operated, the stop members having two guiding means selectively to cooperate with guiding means on said guides for the stepwise displacement of the stop members selectively in one or another position in relation to said guides, the guiding means of which have an interruption at which the stop members, when operated by a numeral key may be displaced from an inactive position, in which one of their guiding means is capable of cooperation with the guiding means of the guide, to an active position, in which the other of their guiding means is capable of cooperation with the guiding means of the guides.

l0. A computing machine with a number of setting or numeraly keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position Srpcooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of vdig'itsin each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step Vto the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and of the direction of displacement of reciprocable actuator members cooperating therewith in which said stop members in each of said rows are displace able in a fixed guide in direct contact with each other, the Vstop members in a limited portion of each of said guides being operable for stepwise displacement to a higher decade and the stop members in the remaining portions of each of said guides being displaceable by the pressure exerted thereon by the stop members thus operated, the stop members having two guiding means selectively to cooperate with guiding means on said guides for the stepwise displacement of the stop members selectively in one or another position in relation to said guides, the guiding means of which have an interruption at which the stop members, when operated by a numeral key may be displaced from an inactive position, in which one of their guiding means is capable of cooperation with the guiding means of the guide, to an active position, in which the other of their guiding means is capable of cooperation with the guiding means of the guides, at least one of the guiding means on the stop members havin'7 a bevelled surface permitting to displace a stop member from the active position to the inactive position outside said interruption in the guiding means of the guide.

l1. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more tctalizers, actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, all of said stop members being further adapted at each depression of a numeral key to be simultaneously displaced one step to the next higher denominational order of the machine transversely of the direction of their individual displacement when set by depression of a numeral key and or the direction or displacement oi reciprocable actuator members cooperating therewith in which saidstop members of each of said rows are displaceable in direct contact with each other in a xed guide, through an operative portion of said guides, in which the stop members are capable of cooperation with the actuator members and through inoperative portions of said guides outside said operative portion, the stop members within a limited portion of each or" said guides being adapted for cooperation with driving means for their stepwise displacement to a higher decade and the other stop members in each of said rows being displaceable by the pressure exerted thereon by the stop members thus operated, the stop members having two guiding means, selectively to cooperate with guiding means on said guides for the stepwise displacement of the stop members selectively in one or another position in relation to said guides, the guiding means of which have an interruption immediately preceding the operative portion of the guide, at which the stop members when operated by a numeral key may be displaced from an inactive position, in which one of their guiding means is capable of cooperation with the guiding means of the guides, to an active position for cooperation with the actuator members, in which position the other of their guiding means is capable of cooperation with the guiding means of the guides, said guiding means or" said guides within the operative portion of said guides being resilient and the guiding means of the stop members cooperatng with the guiding means of the guides in the active position of the stop members having on their side turned towards the other of their guiding means a bevelled surface, capable of pushing aside the resilient guiding means of the operative portion of the guide when the stop member within said portion is forced back from the active position to the inactive position.

l2. ln a computing machine as defined in claim 1l, a resilient guiding means of the guides formed of a strip of sheet steel having the cross-sectional form of an L of which one leg forms a guiding list engaging guiding 22 grooves in the stop members and of which the other leg extends beyond the ends of the guiding list and are fastened to the fixed guiding.

13. ln a computing machine as defined in claim l2, a resilient guiding means of the guides consisting of a steel strip with a bent out edge portion forming a guiding list engaging one of two guiding grooves in the stop members one end of said steel strip being fastened to the guide beyond one end of the guiding list and the other end of said strip forming a pressure member retaining the stop members by Yfriction at the place of their displacement from the inactive position to their active position.

14. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, in which said stop members in each of said rows are displaceable in endless guide grooves in the edges of elongated openings with arched ends of fixed frames, one for each of said rows, the stop members in each row being in direct contact with each other and being at one arched end or" the frame in engagement with driving means for stepwise displacement of the stop members longitudinally of said guide grooves, the stop members within the other portions of said grooves being displaced by the pressure exerted thereon by the stop members thus displaced, the stop members being further at a determined place of the guide grooves displaceable transversely of said grooves from an inactive position within said guide grooves to an active position projecting into the opening of the frame, through which reciprocatable actuator bars with abutments for cooperation with the stop members set into active position are extending.

15. A computing machine with a number of setting or numeral keys corresponding to the number of digits in each denominational order of the machine and having stop members controlled by said numeral keys and adapted at depression of said numeral keys for individual displacement from an inactive position to an active position for cooperation with reciprocable actuator members for one or more totalizers, said actuator members being displaceable relatively to said stop members, said stop members being arranged in a number of rows corresponding to the number of digits in each denominational order of the machine, in which said stop members in each of said rows are displaceable in endless guide grooves formed between the edge portions of elongated openings with arched ends of iixed frames joined together to a block with the openings forming a channel through said block, the stop members in cach of said grooves being in direct contact with each other and having knobs capable of engagement with toothed wheels iixedly mounted on a driving shaft extending through said channel at the locus of the centers of one of the arched ends of said openings, and adapted for stepwise rotation by a pawl mechanism for stepwise displacement of the stop members in engagement with said toothed wheels, the other stop members in the remaining portions of said grooves being displaced by the pressure exerted thereon by the stop members thus displaced, the stop members being further at one place of each of the guide grooves displaceable transversely of the guide grooves by a push member in each frame actioned by a corresponding numeral key of the key-board mounted above said frames from au inactive position within said grooves to an active position projecting within said channel, in which actuator bars longitudinally reciprocatable transversely of said frames 

